HighMem test

["Sanjay AG" <agsanjay@email.com>]

Hi,
   I am trying to test a ethernet driver that supports 64-bit addressing. I was hoping that I would see buffers which are mapped beyond the 4G physical addr (i.e > 32-bit) if I have HIGHMEM enabled and use apps that make use of "sendfile" for Zero-copy (like in pure-ftpd) on a IA-32 machine. However my pci_map_page for the buffer seems to have the upper-32 bits all 0's. Is there something I am missing w/regard to HighMem operation? or is there a better test app that I can use?

 BTW my test machine setup has 5GB of RAM running a 2.4.16 HIGHMEM enabled kernel. 

Would appreciate any responses or pointers...
-Sanjay
-- 
__________________________________________________________
Sign-up for your own FREE Personalized E-mail at Mail.com
http://www.mail.com/?sr=signup

Save up to $160 by signing up for NetZero Platinum Internet service.
http://www.netzero.net/?refcd=N2P0602NEP8

--
To unsubscribe, send a message with 'unsubscribe linux-mm' in
the body to majordomo@kvack.org.  For more info on Linux MM,
see: http://www.linux-mm.org/